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WO2025191686A1 - Machine de fabrication de boîtes - Google Patents

Machine de fabrication de boîtes

Info

Publication number
WO2025191686A1
WO2025191686A1 PCT/JP2024/009563 JP2024009563W WO2025191686A1 WO 2025191686 A1 WO2025191686 A1 WO 2025191686A1 JP 2024009563 W JP2024009563 W JP 2024009563W WO 2025191686 A1 WO2025191686 A1 WO 2025191686A1
Authority
WO
WIPO (PCT)
Prior art keywords
cardboard
box
unit
counter ejector
making machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2024/009563
Other languages
English (en)
Japanese (ja)
Inventor
国彦 山室
敏明 宮倉
修 山本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Machinery Systems Co Ltd
Original Assignee
Mitsubishi Heavy Industries Machinery Systems Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Machinery Systems Co Ltd filed Critical Mitsubishi Heavy Industries Machinery Systems Co Ltd
Priority to PCT/JP2024/009563 priority Critical patent/WO2025191686A1/fr
Publication of WO2025191686A1 publication Critical patent/WO2025191686A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations

Definitions

  • This disclosure relates to a box making machine that processes sheets to produce flattened cardboard boxes.
  • a box-making machine processes sheet material (e.g., cardboard sheets) to produce boxes (cardboard boxes).
  • a box-making machine includes a paper feed unit, a printing unit, a paper discharge unit, a die-cut unit, a folding unit, and a counter ejector unit.
  • Carton making machines can sometimes produce defective cardboard boxes during the manufacturing process.
  • Defective boxes can be caused by, for example, improper paper feeding in the paper feed section, improper printing in the printing section, improper groove cutting positions in the paper discharge section, improper punching positions in the die cut section, and improper gluing or joining positions in the folding section.
  • box making machines are equipped with a defective product removal section.
  • the defective product removal section removes cardboard boxes determined to be defective by the inspection device from the manufacturing line. An example of such a box making machine is described in Patent Document 1.
  • the inspection device judges various processing defects, but it makes strict judgments in order to maintain the consistent quality of cardboard boxes.
  • some cardboard boxes that could be judged as non-defective may be removed from the production line by the defective product removal section. For this reason, workers want to visually inspect the cardboard boxes removed by the defective product removal section, and if the cardboard box is not defective, ship it as a non-defective product.
  • the present disclosure aims to solve the above-mentioned problems and provide a box making machine that improves the efficiency of cardboard box manufacturing operations.
  • the box making machine of the present disclosure comprises a folding unit that forms cardboard boxes by folding sheets and joining the ends together; a defective product removal unit that removes cardboard boxes determined to be defective from the production line; a counter ejector unit that counts and stacks cardboard boxes determined to be non-defective, and then ejects them in predetermined numbers; and a conveying device that transports the cardboard boxes removed by the defective product removal unit below the counter ejector unit to the exit side of the counter ejector unit.
  • the box making machine disclosed herein can improve the efficiency of cardboard box manufacturing operations.
  • FIG. 1 is a schematic diagram showing the configuration of a box former according to the present embodiment.
  • FIG. 2 is a schematic side view showing the defective product removal section and the counter ejector section.
  • FIG. 3 is a schematic plan view showing the defective product removal section and the counter ejector section.
  • FIG. 4 is a control block diagram showing the control system of the box former.
  • ⁇ Box making machine> 1 is a schematic diagram showing a box former according to the present embodiment.
  • the horizontal direction in which the cardboard sheet S and the cardboard box B are conveyed will be referred to as the conveying direction D
  • the horizontal direction perpendicular to the conveying direction D will be referred to as the width direction W.
  • the box making machine 10 processes cardboard sheets S to manufacture cardboard boxes (box bodies) B.
  • the box making machine 10 includes a paper feed unit 11, a printing unit 21, a paper discharge unit 31, a die-cut unit 41, a folding unit 51, and a counter ejector unit 61.
  • the box making machine 10 has a production line for cardboard boxes B, with the paper feed unit 11, printing unit 21, paper discharge unit 31, die-cut unit 41, folding unit 51, and counter ejector unit 61 arranged in a straight line along the conveying direction D.
  • the paper feed unit 11 feeds cardboard sheets S one by one to the printing unit 21 at a constant speed.
  • the paper feed unit 11 has a table 12, a front stop 13, a supply roller 14, a suction device 15, and a feed roll 16.
  • the table 12 can hold a large number of cardboard sheets S stacked on it and is supported so that it can be raised and lowered.
  • the front stop 13 can position the front end of the cardboard sheets S stacked on the table 12, ensuring a gap between the bottom end and the table 12 that allows a single cardboard sheet S to pass through.
  • Multiple supply rollers 14 are arranged in the conveying direction D of the cardboard sheets S corresponding to the table 12. When the table 12 is lowered, the cardboard sheet S at the bottom of the large number of stacked cardboard sheets S is fed forward.
  • the suction device 15 sucks the stacked cardboard sheets S downward, i.e., toward the table 12 and the supply roller 14.
  • the feed roll 16 supplies the cardboard sheet S fed by the supply roller 14 to the printing unit 21.
  • the printing unit 21 performs multi-color printing (four-color printing in this embodiment) on the surface of the cardboard sheet S.
  • the printing unit 21 has four printing units 21A, 21B, 21C, and 21D arranged in series, and prints on the surface of the cardboard sheet S using four ink colors.
  • Each printing unit 21A, 21B, 21C, and 21D is configured almost identically, and has a printing cylinder 22, an ink supply roll (anilox roll) 23, an ink supply section 24, and a receiving roll 25.
  • a printing plate 26 can be attached to the outer periphery of the printing cylinder 22.
  • the discharge unit 31 has the functions of creasing, cutting, and grooving the cardboard sheet S.
  • the discharge unit 31 has a first creasing roll 32, a second creasing roll 33, a slitter head 34, and a slotter head 35.
  • Multiple first creasing rolls 32 are arranged at predetermined intervals in a horizontal direction (width direction W of the cardboard sheet S) perpendicular to the conveying direction D of the cardboard sheet S, and can be rotated by a drive device (not shown).
  • Multiple second creasing rolls 33 are arranged at predetermined intervals in a horizontal direction perpendicular to the conveying direction D of the cardboard sheet S, and can be rotatable by a drive device (not shown).
  • the first creasing roll 32 and second creasing roll 33 creasing the back surface (lower surface) of the cardboard sheet S.
  • slitter heads 34 and slotter heads 35 are arranged at predetermined intervals horizontally perpendicular to the conveying direction D of the cardboard sheet S, and can be rotated by a drive device (not shown).
  • the slitter head 34 consists of one unit, and is provided to correspond to the end of the width direction W of the cardboard sheet S being conveyed, and cuts the end of the cardboard sheet S in the width direction W.
  • the slotter heads 35 consist of four units, and are provided to correspond to predetermined positions in the width direction W of the cardboard sheet S being conveyed, and perform groove cutting and glue tab processing at predetermined positions on the cardboard sheet S.
  • the die-cutting unit 41 punches hand holes and other holes into the cardboard sheet S.
  • the die-cutting unit 41 has a pair of upper and lower feed pieces 42, an anvil cylinder 43, and a knife cylinder 44.
  • the feed pieces 42 clamp and transport the cardboard sheet S from above and below, and are rotatable.
  • the anvil cylinder 43 and knife cylinder 44 are each formed in a circular shape and can rotate synchronously by a drive device (not shown). In this case, the anvil cylinder 43 has an anvil formed on its outer periphery, while the knife cylinder 44 has a die formed at a predetermined position on its outer periphery.
  • the folding unit 51 folds the cardboard sheet S while moving it in the conveying direction D, and joins both ends in the width direction W to form a flat cardboard box B.
  • the folding unit 51 has an upper conveying belt 52, a lower conveying belt 53, and a folder gluer 54.
  • the upper conveying belt 52 and the lower conveying belt 53 clamp and convey the cardboard sheet S from above and below.
  • the folder gluer 54 folds each end of the cardboard sheet S in the width direction W by bending it inward from below.
  • the folding unit 51 is also provided with a gluing device 55.
  • the gluing device 55 has a glue gun and dispenses glue at a predetermined timing to glue the cardboard sheet S at a predetermined position.
  • the counter ejector unit 61 counts and stacks the cardboard boxes B, then sorts them into a predetermined number of batches and ejects them.
  • the counter ejector unit 61 has a ledge 62 that sorts the stacked cardboard boxes into a predetermined number of batches.
  • An elevator 63 is provided below the ledge 62 so that it can move up and down freely. The elevator 63 lowers the cardboard boxes B that have been sorted into batches to the position of the downstream lower conveyor 64.
  • the counter ejector unit 61 also has a front plate and a straightening plate (not shown) that serve as shaping means.
  • a defective product removal unit 101 is disposed between the folding unit 51 and the counter ejector unit 61.
  • the defective product removal unit 101 removes defective cardboard boxes B from the production line.
  • FIG. 2 is a schematic side view showing the defective product removal section and the counter ejector section
  • FIG. 3 is a schematic plan view showing the defective product removal section and the counter ejector section.
  • the defective product removal unit 101 is located between the folding unit 51 and the counter ejector unit 61.
  • An upper transport conveyor 102 and a lower transport conveyor 103 are located between the folding unit 51 and the counter ejector unit 61.
  • a cardboard box B formed by the folding unit 51 is transported while being sandwiched between the upper transport conveyor 102 and the lower transport conveyor 103, and supplied to the counter ejector unit 61.
  • the defective product removal unit 101 is located below the lower transport conveyor 103.
  • the defective product removal section 101 has a switching lever 104 and a storage case 105.
  • the switching lever 104 is positioned upstream of the lower transport conveyor 103.
  • the base end 104a of the switching lever 104 is rotatably supported by a support shaft 106 that extends along the width direction W, and the tip end 104b extends upstream in the transport direction D.
  • the switching lever 104 is rotatable around the support shaft 106, and when the tip end 104b is in a horizontal position, it supplies a cardboard box B between the upper transport conveyor 102 and the lower transport conveyor 103.
  • the tip end 104b of the switching lever 104 is in an upwardly inclined position, it supplies a cardboard box B to the storage case 105.
  • the counter ejector section 61 also includes a hopper section 111, a discharge device 112, and a blower device 113.
  • the hopper section 111 stacks cardboard boxes B.
  • the delivery device 112 continuously delivers cardboard boxes B to the hopper section 111.
  • the air blower 113 blows air from above onto the cardboard boxes B being transported on the hopper section 111.
  • the counter ejector unit 61 has a feed device 112 located at its entrance.
  • the feed device 112 has a pair of upper and lower feed rolls 121 located downstream of the upper transport conveyor 102 and the lower transport conveyor 103.
  • the upper and lower feed rolls 121 feed the cardboard boxes B transported by the upper transport conveyor 102 and the lower transport conveyor 103 to the hopper unit 111.
  • the hopper unit 111 has a space for forming a stack T.
  • the stack T is a bundle of cardboard boxes B formed by stacking multiple cardboard boxes B vertically.
  • the counter ejector unit 61 has a spanker (correction plate) 122 located upstream of the hopper unit 111 that presses against the rear end of the stack T.
  • a flexible front stop 123 is arranged in the hopper section 111 downstream in the conveying direction D of the cardboard boxes B.
  • An elevator 63 is arranged below the hopper section 111.
  • the elevator 63 is arranged horizontally below and downstream of the feeding device 112 in the conveying direction D.
  • the elevator 63 can be raised and lowered vertically by a lifting device 124. As it descends, the elevator 63 receives stacks T accumulated from the ledge 62 and also receives cardboard boxes B that have hit the front stop 123 and fallen onto the stack T, and accumulates the cardboard boxes B to form a stack T of a predetermined number.
  • the counter ejector unit 61 has side frames 125 provided on both sides in the machine width direction downstream of the hopper unit 111 in the conveying direction D of the cardboard boxes B.
  • the side frames 125 are provided with horizontal rails 126, and ledge supports 127 are supported on the rails 126 on both sides so that they can run.
  • the ledge supports 127 can move forward and backward in the conveying direction by a ledge forward/backward movement mechanism consisting of rollers 128 that run on the rails 126, a pinion (not shown) that engages with a rack (not shown) provided along the rails 126, and a drive motor 129 that rotates and drives the pinion.
  • the ledge support 127 is provided with a horizontally extending ledge 62 via an elevating mechanism having a drive motor 130.
  • the elevating mechanism is composed of a rack and pinion mechanism and a drive motor 130 that rotates the pinion. Therefore, the ledge support 127 can be raised and lowered by rotating the drive motor 130 forward and backward.
  • the ledge 62 receives cardboard boxes B that have fallen after hitting the front stop 123, and accumulates the cardboard boxes B to form a stack T. As the stack T is being formed, the ledge 62 hands them over to the elevator 63, and the cardboard boxes B are accumulated on the elevator 63. When the stack T reaches the set number, the ledge 62 operates again to receive cardboard boxes B in place of the elevator 63 to form the next stack T.
  • the ledge 62 supports a press bar 131 that presses against the stack T so that it can be raised and lowered by a lifting mechanism having a drive motor 132.
  • the lifting mechanism also consists of a rack and pinion mechanism and a drive motor 132 that drives the pinion to rotate. Therefore, the press bar 131 can be raised and lowered by rotating the drive motor 132 forward and backward.
  • the lower conveyor 64 is positioned at the same height as the upper surface of the elevator 63 when the elevator 63 is at its lowest point.
  • the transport conveyor 133 is positioned downstream of the lower conveyor 64.
  • the lower conveyor 64 and the transport conveyor 133 are positioned at the same height.
  • the transport conveyor 133 is positioned so that the transport conveyor 134 is continuous with it downstream.
  • the transport conveyors 133 and 134 transport the stack T along the transport direction D.
  • the air blower 113 is arranged around the hopper section 111 and blows air onto the cardboard boxes B sent out from the sending-out device 112.
  • the air blower 113 has a first air blower 135 and a second air blower 136.
  • the first air blower 135 blows air from above towards the front end of the cardboard box B sent out to the hopper section 111.
  • the second air blower 136 blows air from above towards the rear end of the cardboard box B sent out to the hopper section 111.
  • the defective product removal unit 101 operates the switching lever 104 based on the inspection results of an inspection device (not shown).
  • the inspection device detects quality defects in the cardboard sheets S (cardboard boxes B) transported along the production line and determines whether the cardboard sheets S are defective based on the inspection results.
  • the inspection device determines whether the cardboard sheets S are fed properly in the paper feed unit 11, printed properly in the printing unit 21, have a defective groove cutting position in the paper discharge unit 31, have a defective punching position in the die-cut unit 41, or have a defective gluing position in the gluing device 66.
  • the inspection device also determines whether the joining position in the folding unit 51 is defective.
  • the detection device may be a position sensor, image sensor, capacitance sensor, camera, or the like.
  • the defective product removal unit 101 positions the switching lever 104 in a horizontal position.
  • the cardboard box B supplied from the folding unit 51 is then transported to the upper transport conveyor 102 and the lower transport conveyor 103 and supplied to the counter ejector unit 61.
  • the defective product removal unit 101 positions the switching lever 104 in an inclined position.
  • the cardboard box B1 supplied from the folding unit 51 then passes below the switching lever 104, is removed from the production line, and is supplied to the storage case 105.
  • the conveying device 150 conveys defective cardboard boxes B1 that have been removed from the production line by the defective product removal unit 101.
  • the conveying device 150 conveys the defective cardboard boxes B1 from the entrance side of the counter ejector unit 61, passing below the counter ejector unit 61, to the exit side of the counter ejector unit 61.
  • the defective product removal unit 101 removes the cardboard box B1 determined to be defective from the production line and temporarily stores it in a storage case 105.
  • the cardboard boxes B1 stored in the storage case 105 are treated as defective products, but due to variations in the pass/fail determination made by the inspection device, some of the cardboard boxes B1 stored in the storage case 105 may be treated as good products. Workers visually check the cardboard boxes B1 stored in the storage case 105 as defective products, and if the cardboard box B1 is not defective, they would like to ship it as a good product.
  • the box making machine 10 (see Figure 1) has an operation panel 200 installed on the exit side of the counter ejector unit 61.
  • the operation panel 200 can control the operation of the paper feed unit 11, printing unit 21, paper discharge unit 31, die cutting unit 41, folding unit 51, counter ejector unit 61, defective product removal unit 101, etc.
  • the operation panel 200 is operated by an operator 201. Therefore, while the box making machine 10 is operating, the operator 201 is often near the operation panel 200. When the operator 201 near the operation panel 200 visually checks the cardboard box B1 that has been removed from the production line by the defective product removal unit 101, the operator 201 must move from near the operation panel 200 to the entrance side of the counter ejector unit 61, which results in poor work efficiency.
  • cardboard boxes B1 removed from the production line are transported by the transport device 150 to the exit side, passing below the counter ejector unit 61.
  • a worker 201 standing near the operation panel 200 can easily visually confirm that a cardboard box B1 has been removed from the production line, without having to move much.
  • the transport device 150 has a transport conveyor 151 installed near the floor surface G below the counter ejector unit 61.
  • “near the floor surface G” means that the transport conveyor 151 may be in contact with the floor surface G, or may be located a predetermined distance above the floor surface G.
  • the transport conveyor 151 is a roller conveyor or a belt conveyor.
  • the transport conveyors 151 are a pair of left and right conveyors spaced apart in the width direction W, but the number is not limited to this.
  • the transport device 150 is not limited to the transport conveyor 151 and may be, for example, a traveling cart or a gripper device.
  • the transport conveyor 151 moves the cardboard box B1 supplied to the storage case 105 in the transport direction D, and transports it to the exit side of the counter ejector unit 61, that is, near the operation panel 200.
  • the transport conveyor 151 constituting the transport device 150 is configured to transport cardboard boxes B1 in the transport direction D, this configuration is not limited to this.
  • the transport conveyor may include a first conveyor (transport conveyor 151) that transports cardboard boxes B1 in a direction along the transport direction D of the cardboard boxes B, and a second conveyor 152 that transports cardboard boxes B1 in a width direction W that intersects with the transport direction D of the cardboard boxes B.
  • the upstream portion of the second conveyor 152 is positioned adjacent to the downstream portion of the first conveyor (transport conveyor 151).
  • cardboard boxes B1 supplied to the storage case 105 are transported by the first conveyor (transport conveyor 151) to the exit side of the counter ejector unit 61, and then transported by the second conveyor 152 to one side in the width direction W until they are closest to the operation panel 200.
  • Worker 201 can visually inspect cardboard box B1 that has been transported to the exit side of counter ejector unit 61 (near operation panel 200) and re-determine whether it is good or bad.
  • a good product stand 202 is installed adjacent to operation panel 200. If worker 201 visually inspects cardboard box B1 and determines that cardboard box B1 can be handled as a good product, he places cardboard box B1 on good product stand 202 and processes it as a good product. On the other hand, if worker 201 visually inspects cardboard box B1 and determines that cardboard box B1 is defective, cardboard box B1 is disposed of as a defective product.
  • the defective product removal section 101 has an elevator (lifting device) 161 .
  • the elevator 161 is disposed inside the storage case 105 and is supported therein so that it can be raised and lowered freely.
  • the elevator 161 can be raised and lowered by a drive unit (not shown).
  • the elevator 161 receives the cardboard box B1 at the raised position, lowers to move the cardboard box B1 to the lower position, and then hands the cardboard box B1 over to the transport conveyor 151 at the lower position.
  • the elevator 161 has, for example, a conveyor (not shown), and sends the placed cardboard box B1 to the transport conveyor 151 via the conveyor. Note that while the elevator 161 is schematically shown as rectangular in Figure 3, in reality the elevator 161 has a notch so that it does not interfere with the transport conveyor 151 when lowering, and can be lowered to the same height as the transport conveyor 151. However, the elevator 161 may also be configured to directly store the cardboard box B1 in the storage case 105 without providing the elevator 161.
  • FIG. 4 is a control block diagram showing the control system of the box former.
  • a control device 171 is connected to the box making machine 10.
  • the control device 171 is capable of controlling the operation of the box making machine 10.
  • An operating device 172, a display device 173, and a storage device 174 are connected to the control device 171.
  • the control device 171, operating device 172, display device 173, and storage device 174 are provided on an operation panel 200.
  • the operating device 172 can be operated by an operator.
  • the operator inputs operating commands using the operating device 172, and the control device 171 controls the box making machine 10 based on the input commands.
  • the display device 173 can display the operation details of the box making machine 10.
  • the operator inputs display commands using the operating device 172, and the control device 171 switches the display content of the display device 173 based on the display commands.
  • the storage device 174 stores operation data and the like for the box making machine 10.
  • the control device 171 is a controller, and is realized by, for example, a CPU (Central Processing Unit) or MPU (Micro Processing Unit) executing various programs stored in the memory unit using RAM as a working area.
  • a CPU Central Processing Unit
  • MPU Micro Processing Unit
  • a paper feed unit 11 feeds out cardboard sheets S one by one and transports them horizontally at a constant speed.
  • a printing unit 21 performs multicolor printing on the surface of the cardboard sheets S.
  • a paper discharge unit 31 performs creasing, cutting, and grooving on the cardboard sheets S.
  • a die-cut unit 41 performs punching processes such as hand holes on the cardboard sheets S.
  • a folding unit 51 folds the cardboard sheets S and joins both widthwise ends to form flat cardboard boxes B.
  • a counter ejector unit 61 counts and stacks the cardboard boxes B, then sorts them into a predetermined number of batches and discharges them.
  • the inspection device judges whether cardboard sheet S is good or bad.
  • the defective product removal unit 101 operates the switching lever 104 based on the inspection results of the inspection device.
  • the defective product removal unit 101 sets the switching lever 104 to the horizontal position and supplies the good cardboard box B to the counter ejector unit 61 via the upper transport conveyor 102 and the lower transport conveyor 103.
  • the defective product removal unit 101 sets the switching lever 104 to the inclined position, removes the defective cardboard box B1 from the production line, and supplies it to a storage case 105.
  • the cardboard box B1 supplied to the storage case 105 falls onto the elevator 161.
  • the elevator 161 receives the cardboard box B1 at its raised position and descends to its lowered position to hand the cardboard box B1 over to the transport conveyor 151.
  • the transport conveyor 151 transports the received cardboard box B1 to the exit side below the counter ejector unit 61.
  • the worker 201 picks up the cardboard box B1 that has been transported to the exit side of the counter ejector unit 61 and visually determines whether it is good or bad. If the worker 201 can handle the cardboard box B1 as a good product, he places it on the good product table 202; if it is a defective product, he disposes of it.
  • the transport conveyor 151 transports cardboard boxes B1, which have been supplied to the storage case 105 and lowered by the elevator 161, one by one to the exit side of the counter ejector unit 61.
  • a program for controlling the lifting and lowering of the elevator 161 is preset, and when a cardboard box B1 is detected on the elevator 161 by a sensor (not shown), the elevator 161 descends and sends the cardboard box B1 to the transport conveyor 151 at the lowered position.
  • the transport conveyor 151 may operate continuously, or may be set to operate when a cardboard box B1 is placed on it.
  • the transport conveyor 151 may also be configured to transport a predetermined number of cardboard boxes B1 at a time to the exit side of the counter ejector unit 61.
  • a program for controlling the lifting and lowering of the elevator 161 is preset, and when a sensor (not shown) detects a predetermined number of cardboard boxes B1 on the elevator 161, the elevator 161 descends and sends multiple cardboard boxes B1 to the transport conveyor 151 at the lowered position.
  • the transport conveyor 151 may operate continuously, or may be configured to operate when a cardboard box B1 is placed on it.
  • the transport conveyor 151 may be configured to transport the cardboard box B1 to the exit side of the counter ejector unit 61 when a transport start command is input.
  • a transport start command For example, an operator 201 near the operation panel 200 inputs a command to start transporting the cardboard box B1 using the operating device 172 (see Figure 4) when they have free time.
  • the elevator 161 then descends, and sends the cardboard box B1 to the transport conveyor 151 at the lowered position. In this case, the transport conveyor 151 is constantly operating.
  • the control device 171 receives the pass/fail judgment results for the cardboard sheet S (cardboard box B) from the inspection device.
  • the pass/fail judgment results for the cardboard sheet S (cardboard box B) are stored in the memory device 174 as needed.
  • the pass/fail judgment results for the cardboard sheet S (cardboard box B) stored in the memory device 174 are the defect details when the cardboard sheet S (cardboard box B) is judged to be a defective product.
  • the control device 171 reads the defect judgment results for the cardboard boxes B1 from the memory device 174 and displays the defect details of the cardboard boxes B1 on the display device 173.
  • the display device 173 displays a list of the defect details of the multiple cardboard boxes B1 in the order they were transported.
  • the worker 201 can refer to the defect details of the cardboard boxes B1 displayed on the display device 173 to judge whether the cardboard boxes B1 that have been transported to the exit side of the counter ejector unit 61 are good or bad. In other words, because the worker 201 can recognize the defect details of the cardboard boxes B1, he or she can quickly make a visual judgment of whether they are good or bad.
  • the display device 173 is provided on the operation panel 200, but this is not limited to this.
  • the display device 173 may be provided on the exit side of the counter ejector unit 61, as indicated by the two-dot chain line in Figure 4.
  • the display device 173 is installed in a position separate from the operation panel 200.
  • the control device 171 displays the defect details of the cardboard box B1 on the display device 173 provided on the exit side of the counter ejector unit 61.
  • the worker 201 can refer to the defect details of the cardboard box B1 displayed on the display device 173 to determine whether the cardboard box B1 has been conveyed to the exit side of the counter ejector unit 61 is pass/fail. In other words, the worker 201 can recognize the defect details of the cardboard box B1, allowing for quick visual determination of pass/fail.
  • the box making machine of the first aspect comprises a folding unit 51 that forms a cardboard box B by folding a cardboard sheet S and joining the ends together, a defective product removal unit 101 that removes cardboard boxes B that have been determined to be defective from the production line, a counter ejector unit 61 that counts and stacks cardboard boxes B that have been determined to be good, and then ejects them in predetermined numbers, and a conveying device 150 that conveys the cardboard boxes B removed by the defective product removal unit 101 below the counter ejector unit 61 to the outlet side of the counter ejector unit 61.
  • the defective product removal unit 101 determines whether the cardboard sheet S (cardboard box B) is defective based on the inspection results of the inspection device, and if the cardboard sheet S (cardboard box B) is defective, it removes the defective cardboard box B1 from the production line.
  • the conveying device 150 conveys the cardboard box B1 removed from the production line to the exit side, passing below the counter ejector unit 61. This allows the worker 201 to visually re-determine whether the cardboard box B1 is defective on the exit side of the counter ejector unit 61, reducing the amount of worker movement and improving the efficiency of the cardboard box B production work.
  • the box-making machine of the second aspect is the box-making machine of the first aspect, and further includes a transport device 150 having a transport conveyor 151 installed near the floor surface G below the counter ejector unit 61.
  • the transport conveyor 151 As the transport device 150, the transport device 150 can be placed in the narrow space below the counter ejector unit 61, eliminating the need for major modifications to the counter ejector unit 61 and reducing structural complexity.
  • the box-making machine of the third aspect is the box-making machine of the second aspect, and further includes, as transport conveyors, a first conveyor (transport conveyor 151) that transports cardboard boxes B in a direction along the transport direction D of the cardboard boxes B, and a second conveyor 152 that transports cardboard boxes B in a direction intersecting the transport direction D of the cardboard boxes B, with the upstream portion of the second conveyor 152 positioned adjacent to the downstream portion of the first conveyor.
  • the box making machine of the fourth aspect is a box making machine of any one of the first to third aspects, and further includes an elevator (lifting device) 161 that moves the cardboard box B1 removed by the defective product removal section 101 to the upstream side of the conveying device 150.
  • an elevator lifting device 161 that moves the cardboard box B1 removed by the defective product removal section 101 to the upstream side of the conveying device 150.
  • the box-making machine according to the fifth aspect is a box-making machine according to any one of the first to fourth aspects, and further, the conveying device 150 conveys the cardboard boxes B1 one by one below the counter ejector unit 61 to the outlet side of the counter ejector unit 61.
  • the conveying device 150 conveys the cardboard boxes B1 one by one below the counter ejector unit 61 to the outlet side of the counter ejector unit 61.
  • the box making machine of the sixth aspect is a box making machine of any one of the first to fifth aspects, and further comprises a conveying device 150 that conveys a predetermined number of cardboard boxes B1 at a time below the counter ejector unit 61 to the exit side of the counter ejector unit 61. This allows a predetermined number of cardboard boxes B1 to be conveyed together to the exit side of the counter ejector unit 61, enabling the worker to collectively determine the quality of multiple cardboard boxes B1, improving workability.
  • the box-making machine according to the seventh aspect is a box-making machine according to any one of the first to fifth aspects, and further comprises a conveying device 150 that, when a conveyance start command is input, conveys the cardboard box B1 below the counter ejector unit 61 to the exit side of the counter ejector unit 61. This allows the worker to convey the cardboard box B1 to the exit side of the counter ejector unit 61 at a time that suits them, improving workability.
  • the box-making machine according to the eighth aspect is a box-making machine according to any one of the first to seventh aspects, and further includes a display device 173 disposed on the exit side of the counter ejector unit 61, and the display device 173 is capable of displaying the details of defects in the cardboard box B1 removed by the defective product removal unit 101. This allows the worker 201 to determine whether the cardboard box B1 is good or bad by referring to the details of the defects in the cardboard box B1 displayed on the display device 173, improving the workability of the quality determination work.
  • control device 171, operating device 172, display device 173, and memory device 174 are provided on the operation panel 200, but this is not limited to this.
  • An operation panel for operating the defective product removal unit 101 and the conveying device 150 may also be provided separately. In this case, the operation panel is located on the exit side of the counter ejector unit 61.
  • the configurations of the paper feed unit 11, printing unit 21, paper discharge unit 31, die-cut unit 41, folding unit 51, counter ejector unit 61, and defective product removal unit 101 are not limited to those in the embodiment, but may be configured appropriately depending on the specifications and manufacturing process of cardboard box B, etc.
  • the box former 10 is configured with the paper feed unit 11, printing unit 21, paper discharge unit 31, die-cut unit 41, folding unit 51, counter ejector unit 61, and defective product removal unit 101, but is not limited to this configuration.
  • the box former 10 may be configured with the folding unit 51, counter ejector unit 61, and defective product removal unit 101.
  • various operations may be omitted or performed as separate processes depending on the specifications of the cardboard box B and the type of work.

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  • Making Paper Articles (AREA)

Abstract

Une machine de fabrication de boîtes selon la présente invention comprend : une partie de pliage qui forme une boîte en carton par pliage d'une feuille et assemblage de ses bords d'extrémité ; une partie de retrait de produits défectueux qui retire les boîtes en carton déterminées comme défectueuses de la ligne de production ; une partie de comptage/éjection qui empile les boîtes en carton déterminées comme étant de bons produits tout en les comptant et éjecte ensuite les boîtes chaque fois qu'un nombre prescrit a été empilé ; et un dispositif de transport qui transporte les boîtes en carton retirées par la partie de retrait de produit défectueux de façon à passer au-dessous de la partie de comptage/éjection vers le côté de sortie de la partie de comptage/éjection.
PCT/JP2024/009563 2024-03-12 2024-03-12 Machine de fabrication de boîtes Pending WO2025191686A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2024/009563 WO2025191686A1 (fr) 2024-03-12 2024-03-12 Machine de fabrication de boîtes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2024/009563 WO2025191686A1 (fr) 2024-03-12 2024-03-12 Machine de fabrication de boîtes

Publications (1)

Publication Number Publication Date
WO2025191686A1 true WO2025191686A1 (fr) 2025-09-18

Family

ID=97063053

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2024/009563 Pending WO2025191686A1 (fr) 2024-03-12 2024-03-12 Machine de fabrication de boîtes

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Country Link
WO (1) WO2025191686A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006069034A (ja) * 2004-09-02 2006-03-16 Rengo Co Ltd 箱体の積み重ね装置
JP2009078462A (ja) * 2007-09-26 2009-04-16 Mitsubishi Heavy Ind Ltd 製函機の不良品除去装置および製函機
JP2012076334A (ja) * 2010-09-30 2012-04-19 Mitsubishi Heavy Industries Printing & Packaging Machinery Ltd 製函機の不良品除去装置及び製函機

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006069034A (ja) * 2004-09-02 2006-03-16 Rengo Co Ltd 箱体の積み重ね装置
JP2009078462A (ja) * 2007-09-26 2009-04-16 Mitsubishi Heavy Ind Ltd 製函機の不良品除去装置および製函機
JP2012076334A (ja) * 2010-09-30 2012-04-19 Mitsubishi Heavy Industries Printing & Packaging Machinery Ltd 製函機の不良品除去装置及び製函機

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